Multi-Leg Sailing Course Calculator

Marks to Round

Enter one Lat/Lon pair per line with the Latitude and Longitude separated by a comma. Examples: "40 26.767 N, 79 58.933 W" or "40.4461, -79.9822".
Supports formats like:

• 40 26 46 N
• 40 26.767 N
• 40.4461 N
• 79 58 56 W
• 79 58.933 W
• -79.9822

Sail Inventory (Optional)

Define sails and their effective True Wind Angle (0-180°) ranges.

Add Sail